package lab02.test36;

public class Undergraduate extends Student {
    @Override
    String calaGrade() {
        //得到该生的成绩
        double avg=calAverage();
        if (avg>=80&&avg<=100)
            grade="优秀";
        else if (avg>=70 && avg<80)
            grade="良好";
        else if (avg>=60&&avg<70)
        grade="一般";
        else if (avg>=50&&avg<60)
            grade="及格";
       else
           grade="不及格";




        return grade;
    }
}
